Re: WGLC: draft-ietf.avt-ulp-19.txt

Stephan Wenger <stewe <at> stewe.org>
2006-12-01 04:29:31 GMT

On Nov 30, 2006, at 10:39 PM, Ross Finlayson wrote:
>> Noone will be surprised that I might mention that there exist
>> codes which are more flexibility in terms of block size, lower
>> computational complexity and "close-to-MDS" error correction.
>> Other standards bodies which have looked at FEC for streaming
>> (specifically 3GPP and DVB) have chosen those, rather than just
>> simple parity codes (such as RFC2733) or Reed-Solomon codes.
>
> Of course, for completeness, one should also mention that these
> other codes do have at least one potential drawback - namely, that
> they are encumbered
Indeed. To make the picture even more complete: RFC 2733 and the ULP
draft are also encumbered, see declaration #339.
Regards,
Stephan
_______________________________________________
Audio/Video Transport Working Group
avt <at> ietf.org
https://www1.ietf.org/mailman/listinfo/avt

[NetCri07] Submission deadline extension

Elsharnouby, Tamer <sharno <at> cs.umd.edu>
2006-12-01 08:06:34 GMT

*** Our Apologies if you received this multiple ***
Paper submission deadline extended to December 7th.
=======================================================================
Call for Papers
NetCri 07
The First International Workshop on
Research Challenges in Next Generation Networks for
First Responders and Critical Infrastructures
http://www.cs.umd.edu/~sharno/NetCri07 <http://www.cs.umd.edu/~sharno/NetCri07>
In Conjunction with
IEEE IPCCC 2007, New Orleans, Louisiana, April 11-13
=======================================================================
As advances in pervasive computing, wireless communication and sensor
networks continue, more opportunities are open to first responders and
critical infrastructures to benefit from these technologies. Providing
first responders with the best possible technology, infrastructure and
services help save the lives of the general public and the first
responders as well. One of the main challenges to the operations of first
responders and critical infrastructures is to deploy a communication
network that is dependable, secure, and rapidly deployable. In order to
operate effectively, the deployed network supports services such as
location determination, audio and video communication, and in site and

I-D ACTION:draft-ietf-avt-topologies-03.txt

<Internet-Drafts <at> ietf.org>
2006-12-01 15:50:01 GMT

A New Internet-Draft is available from the on-line Internet-Drafts
directories.
This draft is a work item of the Audio/Video Transport Working Group of the IETF.
Title : RTP Topologies
Author(s) : M. Westerlund, S. Wenger
Filename : draft-ietf-avt-topologies-03.txt
Pages : 17
Date : 2006-12-1
This document disucsses multi-endpoint topologies commonly used in
RTP based environments. In particular, centralized topologies
commonly employed in the video conferencing industry are mapped to
the RTP terminology.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-avt-topologies-03.txt
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I-D ACTION:draft-ietf-avt-rtp-atrac-family-07.txt

<Internet-Drafts <at> ietf.org>
2006-12-01 15:50:01 GMT

A New Internet-Draft is available from the on-line Internet-Drafts
directories.
This draft is a work item of the Audio/Video Transport Working Group of the IETF.
Title : RTP Payload Format for ATRAC Family
Author(s) : M. Romaine, J. Matsumoto
Filename : draft-ietf-avt-rtp-atrac-family-07.txt
Pages : 27
Date : 2006-12-1
This document describes an RTP payload format for efficient and
flexible transporting of audio data encoded with the Adaptive
TRansform Audio Codec (ATRAC) family of codecs. Recent enhancements
to the ATRAC family of codecs support high quality audio coding with
multiple channels. The RTP payload format as presented in this
document also includes support for data fragmentation, elementary
redundancy measures, and a variation on scalable streaming.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-avt-rtp-atrac-family-07.txt
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I-D ACTION:draft-ietf-avt-avpf-ccm-03.txt

<Internet-Drafts <at> ietf.org>
2006-12-01 15:50:01 GMT

A New Internet-Draft is available from the on-line Internet-Drafts
directories.
This draft is a work item of the Audio/Video Transport Working Group of the IETF.
Title : Codec Control Messages in the RTP Audio-Visual Profile with Feedback (AVPF)
Author(s) : S. Wenger, et al.
Filename : draft-ietf-avt-avpf-ccm-03.txt
Pages : 50
Date : 2006-12-1
This document specifies a few extensions to the messages defined in
the Audio-Visual Profile with Feedback (AVPF). They are helpful
primarily in conversational multimedia scenarios where centralized
multipoint functionalities are in use. However some are also usable
in smaller multicast environments and point-to-point calls. The
extensions discussed are H.271 video back channel, Full Intra
Request, Temporary Maximum Media Bit-rate and Temporal Spatial Trade-
off.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-avt-avpf-ccm-03.txt
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Draft AVT minutes

Tom-PT Taylor <taylor <at> nortel.com>
2006-12-01 16:03:40 GMT

Sorry to take so long. There are still some rough spots people might
fill in. Anyway, here they are.
Tom Taylor
-------------------------------------------------------------------------
The Audio-Video Transport (AVT) Working Group met twice. The originally
scheduled meeting was on Tuesday morning, Nov. 7. An additional meeting
was necessary to complete the agenda and specifically to consider
proposals for transport of keying and control information along the
media path. The second meetingt was held on Thursday afternoon, Nov. 9,
from 3:10 to 4:10 pm.
Chairs:
Colin Perkins <csp <at> csperkins.org>
Roni Even <roni.even <at> polycom.co.il>
Tom Taylor <taylor <at> nortel.com>
Tom Taylor reporting
1. Agenda, IPR notice, and status
(Colin Perkins)
=================================
Charts at http://www3.ietf.org/proceedings/06nov/slides/avt-0.pdf
Colin announced that the following presentations would be added:
(1) RTP over DCCP (draft-ietf-dccp-rtp-01.txt), Colin Perkins,
immediately following WG status. This is shown on the published agenda

Re: Draft AVT minutes

Colin Perkins <csp <at> csperkins.org>
2006-12-01 17:20:01 GMT

Tom, all,
On 1 Dec 2006, at 16:03, Tom-PT Taylor wrote:
> Sorry to take so long. There are still some rough spots people
> might fill in. Anyway, here they are.
Thanks for these - some minor comments/correction below.
...
> 3. RTCP for Source-specific multicast
> (Joerg Ott <jo <at> netlab.tkk.fi>)
> ================================
> draft-ietf-avt-rtcpssm-12.txt
> Charts at http://www3.ietf.org/proceedings/06nov/slides/avt-9.pdf
>
> Editorial changes were made in the latest version based on reviews.
>
> There was one important technical change, to SSRC collision behaviour.
> The authors also added a mechanism for out-of-band SSRC announcement.
> After expanding on the latter, Joerg asked whether the ability to
> signal
> the SSRC out-of-band (e.g. via SDP) is of more general interest.
>
> Steve Casner suggested that they could run into conflict on the role
> definition (sender) contained in their proposed signalling. There was
> some discussion over whether the source-filter [? - my notes say
> "label"] attribute should be at session or media level.
I assume it's the "a=source-filter:" attribute [RFC 4570].

WGLC Request for CCM and Topologies drafts

Stephan Wenger <stewe <at> stewe.org>
2006-12-02 07:04:27 GMT

Folks,
the authors would like to request last-calling
- draft-ietf-avt-avpf-ccm-03.txt, and
- draft-ietf-avt-topologies-03.txt
Both drafts have been stable for quite a while. Recently, we
incorporated all the comments received on the list, and in private by
Colin, Roni, and Mark Handley.
The CCM draft is normatively referenced in 3GPP SA4's Multimedia
Telephony Over IMS specification draft (TS 26.114). This is 3GPP
Release 7 specification work, and a citable reference by May 2007
would be most appreciated. Topologies are normatively referenced in
the CCM draft; therefore, the two should be moved forward
simultaneously.
Best regards,
Stephan
_______________________________________________
Audio/Video Transport Working Group
avt <at> ietf.org
https://www1.ietf.org/mailman/listinfo/avt

I-D ACTION:draft-ietf-avt-rtcpxr-video-00.txt

<Internet-Drafts <at> ietf.org>
2006-12-04 20:50:01 GMT

A New Internet-Draft is available from the on-line Internet-Drafts
directories.
This draft is a work item of the Audio/Video Transport Working Group of the IETF.
Title : RTCP XR - IP Video Metrics Report Blocks
Author(s) : A. Clark, A. Pendleton
Filename : draft-ietf-avt-rtcpxr-video-00.txt
Pages :
Date : 2006-12-4
This document defines extensions to the RTCP XR extended report
packet type blocks to support the monitoring of video over IP
and the associated audio streams, if present, for IPTV and video
conferencing endpoint reporting.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-avt-rtcpxr-video-00.txt
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Source Code for BroadVoice BV16 speech codec

Navitha Kodkani <nkodkani <at> InnoMedia.com>
2006-12-04 17:53:25 GMT

Hi,
I am an engineer interested in the BV16 codec source code. In one of your
mails you have mentioned that the
source code is available for licensing. Is that the fixed point
version?Can you please tell me where I can find it. I beleive that the
floating point version is royalty free. I haven't been able to get hold of
that either..
I wasn't successful in getting any information from Packet cable..
Any kind of help will be greatly appreciated..
thank you
regards
Navitha
_______________________________________________
Audio/Video Transport Working Group
avt <at> ietf.org
https://www1.ietf.org/mailman/listinfo/avt